“The stagewise and waterfall models.”

““Stop the life cycle-I want to get off!”
“Life-cycle Concept Considered Harmful.”
“The waterfall model is dead.”
“No, it isn’t, but it should be.”
These statements exemplify the current debate about software life-cycle process models. The topic has recently received a great deal of attention.”

“Waterfall, nothing can harm me at all
My worries seem so very small
With my waterfall.”

“Mountain-rose petals
Falling, falling, falling now…
Waterfall music”

“My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives.”

“I touch God in my song
as the hill touched the far-away sea
with its waterfall.”

“Many a calm river begins as a turbulent waterfall, yet none hurtles and foams all the way to the sea.”

“It was a world of acts, and words had no more influence on acts than the sound of a waterfall has on the flow of the stream.”

“My form remains one, though the matter in it changes continually. I am, in that respect, like a curve in a waterfall.”

“Cold, impossible, ahead
Lifts the mountain's lovely head
Whose white waterfall could bless
Travellers in their last distress.”